Thanks for the feedback. I know little about the communication protocol used between Ruida controllers and driving software such as LightBurn, but it seems that the designers overlooked an obvious communication flaw. If hang-ups can (and do) occur and if the laser is firing at the time, it isn’t going to end well! I was lucky, I incurred a spoilt low-value workpiece. But it could easily have been a high value piece and, just as easily, it could have led to a fire.
Question to the LightBurn development team - Is there anything you can do to LightBurn to make it more fault-tolerant. Or, if the answer to that question is No, do you have any clout with Ruida, such that a fault-tolerant protocol could be implemented before a serious accident happens?